Thaum mining thiab sawing, linear ceev ntawm cov hlua hlau txo nrog qhov nce ntawm hardness ntawm cov pob zeb txiav thiab txiav cheeb tsam. Thaum lub hardness ntawm lub pob zeb yog siab thiab qhov chaw txiav yog qhov loj, lub linear ceev ntawm cov hlua hlau yuav tsum tau txo. Yog hais tias nws yog txiav cov pob zeb mos, qhov chaw txiav yog me me, thiab txiav ceev tuaj yeem txhim kho. Raws li ib txwm muaj, cov kab nrawm ntawm cov mining thiab txiav marble hlau hlua yog 38-40 meters ib ob. Thaum mining thiab txiav nyuaj marble xws li serpentine, linear ceev ntawm cov hlua hlau yog 32-38 meters ib ob. Thaum mining thiab txiav mos granite, linear ceev ntawm cov hlua hlau yog 22-30 meters ib ob. Thaum mining thiab txiav nyuaj granite, linear ceev ntawm cov hlua hlau yog 20-33 meters ib ob. Qhov tsim nyog tshaj plaws mining txiav kab ceev yuav tsum tau txiav txim raws li hom pob zeb mined, sim thiab tsom xam los txiav txim qhov zoo tshaj plaws tus nqi. Thaum lub sij hawm trimming thiab phaj txiav, linear ceev ntawm txoj hlua hlau yog txiav txim siab raws li qhov xwm txheej tiag tiag xws li hom pob zeb thiab qhov ntev thiab qhov loj ntawm lub thaiv. Thaum lub sij hawm ib txwm txiav, qhov pom zoo linear ceev ntawm cov hlau pom yog 24-26 meters ib ob rau txiav granite thiab 30-32 meters ib ob rau marble txiav. Lub pob zeb nyuaj dua los yog ntev dua ntawm lub ntsej muag ntawm kev txiav thaiv, qhov qis dua qhov nrawm ntawm cov hlau pom. Txoj kab nrawm dhau yuav ua rau cov hlau pom ua npub, qis dhau yuav ua rau cov hlaws ua oval lossis tapered.
